add build

node_modules/json-stringify-safe/CHANGELOG.md

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+## Unreleased
+- Fixes stringify to only take ancestors into account when checking
+  circularity.  
+  It previously assumed every visited object was circular which led to [false
+  positives][issue9].  
+  Uses the tiny serializer I wrote for [Must.js][must] a year and a half ago.
+- Fixes calling the `replacer` function in the proper context (`thisArg`).
+- Fixes calling the `cycleReplacer` function in the proper context (`thisArg`).
+- Speeds serializing by a factor of
+  Big-O(h-my-god-it-linearly-searched-every-object) it had ever seen. Searching
+  only the ancestors for a circular references speeds up things considerably.
+
+[must]: https://github.com/moll/js-must
+[issue9]: https://github.com/isaacs/json-stringify-safe/issues/9